Add a rawx service

Description

In this documentation, you will find the different steps to add a new rawx service on your cluster.

In this example, we will add a new rawx service (rawx-2) in the namespace OPENIO on an existing server:

Furthermore, to secure your new rawx service, you will have two options:
  • assign an existing rdir to your new rawx
  • install a new rdir service (rdir-2) and assign it to your new rawx

Both options will be detailed here after.

Prerequisites

You must have the IPs and PORTs that will be used for your new services. In this example:

  • the new rawx will listen on 10.0.0.36:6211
  • the new rdir will listen on 10.0.0.39:6302

Configuration

Configure a new rawx

Create an new directory /rawx-2 in /var/lib/oio/sds/OPENIO/

Give the rights on this directory to the openio user:

$ chown openio.openio rawx-2/

Create an new directory /rawx-2 in /etc/oio/sds/OPENIO/

Give the rights on this directory to the openio user:

$ chown openio.openio rawx-2/

Create a new configuration file (rawx-2-httpd.conf) in your new created directory /etc/oio/sds/OPENIO/rawx-2:

/etc/oio/sds/OPENIO/rawx-2/rawx-2-httpd.conf
LoadModule mpm_worker_module   /usr/lib64/httpd/modules/mod_mpm_worker.so
LoadModule authz_core_module   /usr/lib64/httpd/modules/mod_authz_core.so
LoadModule dav_module          /usr/lib64/httpd/modules/mod_dav.so
LoadModule mime_module         /usr/lib64/httpd/modules/mod_mime.so
LoadModule dav_rawx_module     /usr/lib64/httpd/modules/mod_dav_rawx.so
LoadModule setenvif_module     /usr/lib64/httpd/modules/mod_setenvif.so
LoadModule alias_module        /usr/lib64/httpd/modules/mod_alias.so
LoadModule env_module          /usr/lib64/httpd/modules/mod_env.so
LoadModule unixd_module        /usr/lib64/httpd/modules/mod_unixd.so
LoadModule log_config_module   /usr/lib64/httpd/modules/mod_log_config.so
LoadModule logio_module        /usr/lib64/httpd/modules/mod_logio.so

Alias / /x/

Listen          10.0.0.36:6211
PidFile         /run/oio/sds/OPENIO-rawx-2-httpd.pid
ServerRoot      /var/lib/oio/sds/OPENIO/coredump
ServerName      localhost
ServerSignature Off
ServerTokens    Prod
DocumentRoot    /var/lib/oio/sds/OPENIO/rawx-2
TypesConfig     /etc/mime.types

User  openio
Group openio

SetEnv INFO_SERVICES OIO,OPENIO,rawx,2
SetEnv LOG_TYPE access
SetEnv LEVEL INF
SetEnv HOSTNAME node-1.novalocal

SetEnvIf Remote_Addr "^" log-cid-out=1
SetEnvIf Remote_Addr "^" log-cid-in=0
SetEnvIf Request_Method "PUT" log-cid-in=1
SetEnvIf Request_Method "PUT" !log-cid-out
SetEnvIf log-cid-in 0 !log-cid-in

LogFormat "%{%b %d %T}t %{HOSTNAME}e %{INFO_SERVICES}e %{pid}P %{tid}P %{LOG_TYPE}e %{LEVEL}e %{Host}i %a:%{remote}p %m %>s %D %I %{x-oio-chunk-meta-container-id}i %{x-oio-req-id}i %U" log/cid-in
LogFormat "%{%b %d %T}t %{HOSTNAME}e %{INFO_SERVICES}e %{pid}P %{tid}P %{LOG_TYPE}e %{LEVEL}e %{Host}i %a:%{remote}p %m %>s %D %O %{x-oio-chunk-meta-container-id}o %{x-oio-req-id}i %U" log/cid-out

ErrorLog /var/log/oio/sds/OPENIO/rawx-2/rawx-2-httpd-errors.log
SetEnvIf Request_URI "/(stat|info)$" nolog=1

SetEnvIf nolog 1 !log-cid-out
SetEnvIf nolog 1 !log-cid-in

CustomLog /var/log/oio/sds/OPENIO/rawx-2/rawx-2-httpd-access.log log/cid-out env=log-cid-out
CustomLog /var/log/oio/sds/OPENIO/rawx-2/rawx-2-httpd-access.log log/cid-in  env=log-cid-in

<IfModule worker.c>
MaxRequestsPerChild 0
MaxSpareThreads 256
MinSpareThreads 32
ServerLimit 16
StartServers 1
ThreadsPerChild 256
</IfModule>


DavDepthInfinity Off

grid_docroot    /var/lib/oio/sds/OPENIO/rawx-2
# How many hexdigits must be used to name the indirection directories
grid_hash_width 3
# How many levels of directories are used to store chunks
grid_hash_depth 1
# At the end of an upload, perform a fsync() on the chunk file itself
grid_fsync      enabled
# At the end of an upload, perform a fsync() on the directory holding the chunk
grid_fsync_dir  enabled
# Preallocate space for the chunk file (enabled by default)
#grid_fallocate enabled
# Enable compression ('zlib' or 'lzo' or 'off')
grid_compression off
grid_namespace  OPENIO
grid_dir_run    /run/oio/sds

<Directory />
DAV rawx
AllowOverride None
Require all granted
Options -SymLinksIfOwnerMatch -FollowSymLinks -Includes -Indexes
</Directory>

<VirtualHost 10.0.0.36:6211>
# DO NOT REMOVE (even if empty) !
</VirtualHost>

The following configuration must be adapted to your new service:

  • Listen
  • PidFile
  • DocumentRoot
  • SetEnv
  • ErrorLog
  • CustomLog
  • grid_docroot
  • VirtualHost

Create a new configuration file (OPENIO-rawx-2) in the /etc/gridinit.d/ directory:

/etc/gridinit.d/OPENIO-rawx-2
[Service.OPENIO-rawx-2]
command=/usr/sbin/httpd -D FOREGROUND -f /etc/oio/sds/OPENIO/rawx-2/rawx-2-httpd.conf
enabled=true
start_at_boot=yes
on_die=respawn
group=OPENIO,rawx,rawx-2
uid=openio
gid=openio
env.PATH=/usr/local/bin:/usr/bin:/usr/local/sbin:/usr/sbin

Create a new configuration file (rawx-2.yml) in the /etc/oio/sds/OPENIO/watch/ directory:

/etc/oio/sds/OPENIO/watch/rawx-2.yml
host: 10.0.0.36
port: 6211
type: rawx
location: node-1
checks:
- {type: http, uri: /info}
stats:
- {type: volume, path: /var/lib/oio/sds/OPENIO/rawx-2}
- {type: rawx, path: /stat}
- {type: system}

The following configuration must be adapted to your new service:

  • host
  • port
  • type: volume, path

Then, to make your new rawx service available, you have to reload the configuration and start the service:

$ gridinit_cmd reload
$ gridinit_cmd start OPENIO-rawx-2

And to restart the conscience agent:

$ gridinit_cmd restart @conscienceagent

Configure a new rdir (optionnal)

In order to secure the new rawx, you can install a new rdir service on another server.

Create an new directory /rdir-2 in /var/lib/oio/sds/OPENIO/

Give the rights on this directory to the openio user:

$ chown openio.openio rdir-2/

Create an new directory /rdir-2 in /etc/oio/sds/OPENIO/

Give the rights on this directory to the openio user:

$ chown openio.openio rdir-2/

Create a new configuration file (rdir-2.conf) in your new created directory /etc/oio/sds/OPENIO/rdir-2:

/etc/oio/sds/OPENIO/rdir-2/rdir-2.conf
[rdir-server]
bind_addr = 10.0.0.39
bind_port = 6302
namespace = OPENIO
# Currently, only 1 worker is allowed to avoid concurrent access to leveldb database
workers = 1
worker_class = sync
threads = 1
db_path= /var/lib/oio/sds/OPENIO/rdir-2
log_facility = LOG_LOCAL0
log_level = info
log_address = /dev/log
syslog_prefix = OIO,OPENIO,rdir,2

Create a new configuration file (OPENIO-rdir-2) in the /etc/gridinit.d/ directory:

/etc/gridinit.d/OPENIO-rdir-2
enabled=true
start_at_boot=yes
on_die=respawn
group=OPENIO,rdir,rdir-2
uid=openio
gid=openio
env.PATH=/usr/local/bin:/usr/bin:/usr/local/sbin:/usr/sbin

Create a new configuration file (rdir-2.yml) in the /etc/oio/sds/OPENIO/watch/ directory:

/etc/oio/sds/OPENIO/watch/rdir-2.yml
host: 10.0.0.39
port: 6302
type: rdir
location: yb-2
checks:
  - {type: tcp}
stats:
  - {type: volume, path: /var/lib/oio/sds/OPENIO/rdir-2}
  - {type: http, path: /status, parser: json}
  - {type: system}

Then, to make your new rdir service available, you have to reload the configuration and start the service:

$ gridinit_cmd reload
$ gridinit_cmd start OPENIO-rdir-2

And to restart the conscience agent:

$ gridinit_cmd restart @conscienceagent

Then, you will have to unlock your new service:

$ openio cluster unlock rdir 10.0.0.39:6302

Rdir assignation

In order to secure the new rawx, you must assign your new rawx to a rdir service.

In the example below, you can see that the new rawx (10.0.0.36:6211) has no rdir assignation, and your new rdir (10.0.0.39:6302) does not manage any rawx:

$ openio volume assignation --aggregated
+----------------+-----------------+----------------+
| Rdir           | Number of bases | Bases          |
+----------------+-----------------+----------------+
| 10.0.0.36:6301 |               1 | 10.0.0.37:6201 |
| 10.0.0.37:6301 |               1 | 10.0.0.38:6201 |
| 10.0.0.39:6302 |               0 |                |
| 10.0.0.38:6301 |               1 | 10.0.0.36:6201 |
| n/a            |               1 | 10.0.0.36:6211 |
+----------------+-----------------+----------------+

Whether you have installed a new rdir or not, you will have to launch the following command to create the assignation:

$ openio volume admin bootstrap
+----------------+----------------+---------------+---------------+
| Rdir           | Rawx           | Rdir location | Rawx location |
+----------------+----------------+---------------+---------------+
| 10.0.0.36:6301 | 10.0.0.37:6201 | yb-1          | yb-2          |
| 10.0.0.37:6301 | 10.0.0.38:6201 | yb-2          | yb-3          |
| 10.0.0.37:6301 | 10.0.0.36:6211 | yb-2          | yb-1          |
| 10.0.0.38:6301 | 10.0.0.36:6201 | yb-3          | yb-1          |
+----------------+----------------+---------------+---------------+

Finalize the installation

Finally, you will have to unlock your new service:

$ openio cluster unlock rawx 10.0.0.36:6211

You can check that your new service is available using the openio cluster list command:

$ openio cluster list

+---------+----------------+------------+---------------------------------+------------+-------+------+-------+
| Type    | Addr           | Service Id | Volume                          | Location   | Slots | Up   | Score |
+---------+----------------+------------+---------------------------------+------------+-------+------+-------+
| account | 10.0.0.38:6009 | n/a        | n/a                             | node-3     | n/a   | True |    96 |
| account | 10.0.0.36:6009 | n/a        | n/a                             | node-1     | n/a   | True |    95 |
| account | 10.0.0.37:6009 | n/a        | n/a                             | node-2     | n/a   | True |    98 |
| meta0   | 10.0.0.38:6001 | n/a        | /var/lib/oio/sds/OPENIO/meta0-1 | node-3     | n/a   | True |    98 |
| meta0   | 10.0.0.36:6001 | n/a        | /var/lib/oio/sds/OPENIO/meta0-1 | node-1     | n/a   | True |    97 |
| meta0   | 10.0.0.37:6001 | n/a        | /var/lib/oio/sds/OPENIO/meta0-1 | node-2     | n/a   | True |    98 |
| meta1   | 10.0.0.38:6111 | n/a        | /var/lib/oio/sds/OPENIO/meta1-1 | node-3     | n/a   | True |    92 |
| meta1   | 10.0.0.36:6111 | n/a        | /var/lib/oio/sds/OPENIO/meta1-1 | node-1     | n/a   | True |    90 |
| meta1   | 10.0.0.37:6111 | n/a        | /var/lib/oio/sds/OPENIO/meta1-1 | node-2     | n/a   | True |    92 |
| meta2   | 10.0.0.38:6121 | n/a        | /var/lib/oio/sds/OPENIO/meta2-1 | node-3     | n/a   | True |    91 |
| meta2   | 10.0.0.36:6121 | n/a        | /var/lib/oio/sds/OPENIO/meta2-1 | node-1     | n/a   | True |    90 |
| meta2   | 10.0.0.37:6121 | n/a        | /var/lib/oio/sds/OPENIO/meta2-1 | node-2     | n/a   | True |    92 |
| rawx    | 10.0.0.36:6211 | n/a        | /var/lib/oio/sds/OPENIO/rawx-2  | node-1     | n/a   | True |    90 |
| rawx    | 10.0.0.38:6201 | n/a        | /var/lib/oio/sds/OPENIO/rawx-1  | node-3     | n/a   | True |    92 |
| rawx    | 10.0.0.36:6201 | n/a        | /var/lib/oio/sds/OPENIO/rawx-1  | node-1     | n/a   | True |    90 |
| rawx    | 10.0.0.37:6201 | n/a        | /var/lib/oio/sds/OPENIO/rawx-1  | node-2     | n/a   | True |    91 |
| rdir    | 10.0.0.38:6301 | n/a        | /var/lib/oio/sds/OPENIO/rdir-1  | node-3     | n/a   | True |    97 |
| rdir    | 10.0.0.36:6301 | n/a        | /var/lib/oio/sds/OPENIO/rdir-1  | node-1     | n/a   | True |    95 |
| rdir    | 10.0.0.37:6301 | n/a        | /var/lib/oio/sds/OPENIO/rdir-1  | node-2     | n/a   | True |    97 |
+---------+----------------+------------+---------------------------------+------------+-------+------+-------+